论文对 2 0年来男子短跑成绩演变和 1 997年田径世锦赛男子百米成绩数据 (1 0 0m各个阶段的跑速、步长、步频、步数 )进行了深入的分析 ,认为 :世界男子 1 0 0m短跑成绩近 2 0年稳步提高 ;世界男子 1 0 0m短跑运动员平均最高速度的产生段落在 5 0～ 70m之间 ,速度下降发生在 90～ 1 0 0m ,下降幅度达 4 .72± 1 .2 3% ;在冲刺阶段 ,大部分运动员步幅增大至最高水平 ,步频和步长高度的负相关 ,年龄与步长高度正相关 ,最高速度在很大程度上决定着百米成绩 The dissertation analyzes the evolution of men’s sprint performance in 20 years and the data of men’s 100 meters in track and field competition in 1997 (running speed, step length, pace frequency and number of steps in each stage of 100m), and concludes that: The sprint performance of 1 000 meters spiraled up steadily in the recent 20 years. The average maximum speed of male sprinters in the world ranged from 50 to 70 meters, and the speed drop occurred at 90 to 100 meters with a decrease of 4.72 ± 1 .2 3%; in the sprint stage, most of the athletes increased their stride to the highest level, the step frequency and the step height were negatively correlated, and age and step height were highly positive. The maximum speed largely determined the one hundred meters Score